Interface MockKeyboardEvent

lib/input-handler.test.ts:11–21

// Mock DOM types for testing
interface MockKeyboardEvent {
  code: string;
  key: string;
  ctrlKey: boolean;
  altKey: boolean;
  shiftKey: boolean;
  metaKey: boolean;
  repeat: boolean;
  preventDefault: () => void;
  stopPropagation: () => void;
}

interface MockClipboardEvent {
  type: string;